Generally tongue is known to show the sense of taste in persons while they eat, as well as control breath to produce the necessary sounds. However, there are various other functions of the tongue in several organisms.
Believe it or not, the strongest muscle in the body is the tongue. The tongue is loaded with many taste buds and these taste buds recognize specific tastes such as sweetness, bitterness, sourness, spice, etc. However, there are many animals that do not use their tongues just for tasting.